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Nothing tests a sibling bond quite like a name nobody technically owns.

One woman spent years trying to get pregnant, and once it finally happened, she wanted to honor her grandmother and mother by using their shared middle name for her baby.

Her younger sister had already welcomed two children without using it, yet she reacted like her territory had been invaded, declaring the name hers alone and promising to end the relationship if it was used.

Meanwhile, the mom’s husband urged her not to bow to the ultimatum.

Now she’s stuck weighing family tradition against family peace.

Keep reading for the full story.

AITA: Sister is throwing a fit about us using her middle name for our baby

I am pregnant with our first child. We’ve been trying for years and it finally happened, and this will likely be our only child.

This new mom explains some background about the family.

My youngest sister has already had two children she did not pass the name on to.

It is also my grandmother’s middle name, my mother’s middle name, and goes back several generations in my family.

But soon some explosive drama with her sister ensued.

When I told her I wanted to use it, she blew up at me and told me it was HER middle name to pass on, not mine, and planned to use it with her next child.

I told her it was just a middle name, and I didn’t see why we couldn’t both use it, since it is a family name and not just hers.

She said if I use it, I’m an AH, and she won’t ever speak to me again.

Now this new mom finds herself in a difficult situation.

I don’t want to ruin my relationship with my sister over a name, but I feel like she’s being a bit unreasonable, because it is also my mother’s and grandmother’s middle name.

My husband is really upset because he was really attached to the name, and says I shouldn’t just roll over to my sister’s demands for a kid she hasn’t even conceived yet.

I still likely won’t use it, but if I do, AITA?

This sister needs to get her emotions in check — and fast.

What did Reddit have to say?

You don’t get to own a name — at least not in this context.

This commenter calls it what it is: gatekeeping.

This user encourages the mom to not be persuaded by her sister, who’s clearly unwell.

If you enjoyed this story, check out this post about a man who deliberately kisses his newborn nephew while sick with a cold, going directly against the parents’ explicit wishes.

This commenter wonders what else may be laying beneath the surface.

A middle name that lives on three generations of women in one family can’t belong to whichever sister shouts loudest.

This sister had two babies and two blank spaces where the name could have gone, so her sudden attachment arrived about two children too late.

Threatening to stop speaking over a word her mother and grandmother also carried says a lot about how she views the family tree, which is apparently as a private orchard.

You can’t call dibs on a family name.